//
//  TutorController.h
//  <21.1> TypingTutor
//
//  Created by chen on 16/9/21.
//  Copyright © 2016年 tyrad. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface TutorController : NSObject
{
    
    NSTimeInterval _startTime ;
    NSTimeInterval _timeLimit ;
    NSTimeInterval _elapsedTime ;
    NSInteger _lastIndex ;
}


@property(nonatomic, strong)NSArray * letter;
@property(nonatomic, strong)NSTimer *timer ;



- (IBAction)stopGo:(id)sender;

- (void)updateElapsedTime;

- (void)resetElapsedTime ;

- (void)showAnotherLetter ;





@end
